<template>
    <div class="goodsinfo-container">
        <transition @before-enter="beforeEnter" @enter="enter" @after-enter="afterEnter">
            <div class="ball" v-show="ballFlag" ref="ball"></div>
        </transition>
        <div class="mui-card">
            <div class="mui-card-content">
                <div class="mui-card-content-inner">
                    <swiper :slideList="lunboList" :isfull="true"></swiper>
                </div>
            </div>
        </div>

        <div class="mui-card">
            <div class="mui-card-header">{{goodsinfo.title}}</div>
            <div class="mui-card-content">
                <div class="mui-card-content-inner">
                    <p class="price">
                        市场价：<del>￥{{goodsinfo.market_price}}</del>&emsp;销售价：<span class="now_price">￥{{goodsinfo.sell_price}}</span>
                    </p>
                    <p>
                        购买数量：<numbox @getcount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox>
                    </p>
                    <p>
                        <mt-button type="primary" size="small">立即购买</mt-button>
                        <mt-button type="danger" size="small" @click="addToShopCar">加入购物车</mt-button>
                    </p>
                </div>
            </div>
        </div>

        <div class="mui-card">
            <div class="mui-card-header">商品参数</div>
            <div class="mui-card-content">
                <div class="mui-card-content-inner">
                    <p>商品货号：{{goodsinfo.goods_no}}</p>
                    <p>库存情况：{{goodsinfo.stock_quantity}} 件</p>
                    <p>上架时间：{{goodsinfo.add_time | dateFormat}}</p>
                </div>
            </div>
            <div class="mui-card-footer">
                <mt-button type="primary" size="large" @click="goDesc(id)">图文介绍</mt-button>
                <mt-button type="danger" size="large" @click="goComment(id)">商品评论</mt-button>
            </div>
        </div>
    </div>
</template>
<script type="text/ecmascript-6">
    import swiper from "../subcomponents/swiper.vue"
    import numbox from "../subcomponents/goodsinfo_numbox.vue"
    export default{
        data(){
            return {
                id: this.$route.params.id,
                lunboList: [],
                goodsinfo: {},
                ballFlag: false,
                selectedCount: 1
            }
        },
        created(){
          this.getLunbotu();
          this.getGoodsInfo();
        },
        methods: {
            getLunbotu(){
                this.$http.get("goodsinfo-lunbo-img/goodsinfo-lunbo-img-" + this.id + ".json").then(result => {
                    if(result.body.status === 0){
                        result.body.message.forEach(item => {
                            item.img = item.src;
                        });
                        this.lunboList = result.body.message;
                    }
                })
            },
            getGoodsInfo(){
                this.$http.get("goodsinfo/goodsinfo-" + this.id + ".json").then(result => {
                    if(result.body.status === 0){
                        this.goodsinfo = result.body.message[0];
                    }
                })
            },
            goDesc(id){
                this.$router.push({
                    name: "goodsdesc",
                    params: { id }
                })
            },
            goComment(id){
                this.$router.push({
                    name: "goodscomment",
                    params: { id }
                })
            },
            addToShopCar(){
                this.ballFlag = !this.ballFlag;
                var goodsinfo = {
                    id: this.id,
                    count : this.selectedCount,
                    price: this.goodsinfo.sell_price,
                    selected: true
                };
                this.$store.commit("addToCar",goodsinfo)
            },
            beforeEnter(el){
                el.style.transform = "translate(0,0)";
            },
            enter(el,done){
                el.offsetWidth;
                //获取小球在页面中的位置
                const ballPosition = this.$refs.ball.getBoundingClientRect();
                //获取徽章在页面中的位置
                const badgePosition = document.getElementById("badge").getBoundingClientRect();
                const xDist = badgePosition.left - ballPosition.left;
                const yDist = badgePosition.top - ballPosition.top;
                el.style.transform = `translate(${xDist}px, ${yDist}px)`;
                el.style.transition = "all .5s cubic-bezier(.49,-0.24,1,.69) ";
                done();
            },
            afterEnter(el){
                this.ballFlag = !this.ballFlag;
            },
            getSelectedCount(count){
                this.selectedCount = count;
            }
        },
        components: {
            swiper,
            numbox
        }
    }
</script>
<style lang="less" scoped>
.goodsinfo-container{
    background-color: #eee;
    overflow: hidden;
    .ball{
        width: 15px;
        height: 15px;
        border-radius: 50%;
        background-color: #f00;
        position: absolute;
        top: 390px;
        left: 146px;
        z-index: 99;
    }
    .now_price{
        color: red;
        font-size: 16px;
        font-weight: 700;
    }
    .mui-card-footer{
        display: block;
        button{
            margin: 15px 0;
        }
    }
}
</style>